Methods and apparatus for replacing cooling systems in operating computers
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United States of America Patent
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May 15, 2007
Issued Date -
N/A
app pub date -
Jan 9, 2006
filing date -
Dec 12, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus and method for replacing a CPU cooling system, for example, a fan, while a computer continues to operate has a mechanism for maintenance personnel to signal that cooling fan replacement is about to begin. In response to the signal, a control mechanism causes the CPU to shift into an operating mode in which heat generation is reduced. In some cases, a clock frequency of the affected CPU and/or a duty cycle at which the CPU operates is reduced. After the fan has been replaced the control mechanism returns the CPU to a normal operational mode, for example, by increasing the clock frequency or duty cycle to a normal level. During the fan replacement procedure, the CPU and its software continues to run at lower than normal performance.
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